2.4.0.800000032 - Disclosure - Investments in Finance Leases (Details)truefalsefalse1false USDfalsefalse$AsOf2013-06-30http://www.sec.gov/CIK0001489367instant2013-06-30T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$AsOf2012-12-31http://www.sec.gov/CIK0001489367instant2012-12-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 2us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Investment, Finance Leases2false 3us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceivedus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse92096279209627USD$falsetruefalse2truefalsefalse83195978319597USD$falsetruefalsexbrli:monetaryItemTypemonetaryAmount of remaining payments as of the balance sheet date that lessees are obligated to make or can be required to make under direct financing leases, including any guarantee of residual value and executory costs. The amount also includes any guaranteed rental payments by an unrelated third-party provided that are financially capable of making such payments.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 false2Minimum rents receivable3false 3us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedPropertyus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse535791535791falsefalsefalse2truefalsefalse465151465151falsefalsefalsexbrli:monetaryItemTypemonetaryThe estimate of the lease property's economic value at the end of the direct financing lease term excluding any amounts guaranteed by either the lessee or a third-party.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 false2Estimated unguaranteed residual value4false 3us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncomeus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-2216469-2216469falsefalsefalse2truefalsefalse-1944158-1944158falsefalsefalsexbrli:monetaryItemTypemonetaryThe remaining (unamortized) difference between the gross investment in a direct financing lease and the cost or carrying amount, if different, of the leased property as of the balance sheet date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 false2Unearned income5false 3us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse75289497528949USD$falsetruefalse2truefalsefalse68405906840590USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 false2Investment, finance leasesfalseInvestments in Finance Leases (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://sqncapital.com/role/InvestmentsInFinanceLeasesDetails25